//package com.zjx.activitispringboot.util;
//
//import org.slf4j.Logger;
//import org.slf4j.LoggerFactory;
//import org.springframework.beans.factory.annotation.Autowired;
//import org.springframework.beans.factory.annotation.Qualifier;
//import org.springframework.security.core.Authentication;
//import org.springframework.security.core.GrantedAuthority;
//import org.springframework.security.core.context.SecurityContextHolder;
//import org.springframework.security.core.context.SecurityContextImpl;
//import org.springframework.security.core.userdetails.UserDetails;
//import org.springframework.security.core.userdetails.UserDetailsService;
//import org.springframework.stereotype.Component;
//
//import java.util.Collection;
//
//
//@Component
//public class SecurityUtil {
//    private Logger logger = LoggerFactory.getLogger(SecurityUtil.class);
//
//     @Autowired
//     @Qualifier("myUserDetailsService")
//     private UserDetailsService userDetailsService;
//
//    public void logInAs(String username) {
//     UserDetails user = userDetailsService.loadUserByUsername(username);
//
//     if (user == null) {
//         throw new IllegalStateException("User " + username + " doesn't exist, please provide a valid user");
//     }
//     logger.info("> Logged in as: " + username);
//
//     SecurityContextHolder.setContext(
//             new SecurityContextImpl(
//                     new Authentication() {
//                         @Override
//                         public Collection<? extends GrantedAuthority> getAuthorities() {
//                             return user.getAuthorities();
//                         }
//                         @Override
//                         public Object getCredentials() {
//                             return user.getPassword();
//                         }
//                         @Override
//                         public Object getDetails() {
//                             return user;
//                         }
//                         @Override
//                         public Object getPrincipal() {
//                             return user;
//                         }
//                         @Override
//                         public boolean isAuthenticated() {
//                             return true;
//                         }
//                         @Override
//                         public void setAuthenticated(boolean isAuthenticated) throws IllegalArgumentException { }
//                         @Override
//                         public String getName() {
//                             return user.getUsername();
//                         }
//     }));
//     org.activiti.engine.impl.identity.Authentication.setAuthenticatedUserId(username);
// }
//  }